From: "Rolf Liu" <rolfl@sc23.sc.mcel.mot.com>
To: <linuxppc-dev@lists.linuxppc.org>
Subject: question about 'r2' !!!
Date: Wed, 6 Sep 2000 10:24:22 +0800 [thread overview]
Message-ID: <00b401c017a9$91f50640$bf0102c8@sc.mcel.mot.com> (raw)
Hi, all,
As everyone konws, Linux use register 'r2' as a reference of 'current',which
is realized by
GCC. Also, the exeception handling of Linux do some work about 'r2'.
I am currently engaged in compiling Linux-ppc source tree using a CC other
than GCC.
The CC can only produce the executable format of 'EABI', a convention made
by Motorola.
And 'EABI' use 'r2' as a base address register for reference of const data,
which can't
be changed. So I want to use a general global varialbe as 'current', leaving
'r2' to 'EABI'.
Anyone has some experence in such issue?
what consideration I must take?
I am pleased to get any comments from you .
Thanks a lot
Rolf
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next reply other threads:[~2000-09-06 2:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-09-06 2:24 Rolf Liu [this message]
2000-09-06 11:00 ` question about 'r2' !!! Geert Uytterhoeven
2000-09-06 16:46 ` Michael Schmitz
2000-09-06 20:23 ` Frank Rowand
2000-09-06 20:41 ` Michael Schmitz
2000-09-06 21:07 ` Dan Malek
2000-09-07 11:16 ` Michael Schmitz
2000-09-07 0:53 ` Paul Mackerras
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